Condensation Theory

You know how you grab a glass of water and load it with ice cubes and set it on the table?  Later you come back and your glass is covered with water droplets!  That's condensation.  The warm air outside the glass interacts with the cold liquid (and air) within the glass.  This makes water droplets!  

Astronomers and researchers believe this is how our Solar System may have formed.  It all starts in a star nursery or a nebula.  Near a hotter region where a baby star (protostar) is forming, gases and elements are reacting like a cold glass of water in a warm room!  Droplets of gases and elements come together in a ring around the protostar.  The warm temperatures and colder temperatures cause the particles to build and grow around the star.

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A side view of the Solar System shows the temperatures as they change traveling away from the protostar.  

−Water and most hydrogen compounds have a high evaporation rate near heat, and cannot exist near the Sun. They exist far away from the Sun.
−Metals and rocks have a low evaporation rate, and can form near the Sun.
−Frost line lies between the orbit of Mars and Jupiter. 

What this means is:  gases burn off when the heat is too high.  Metals and rock absorb heat, but don't burn off any materials.  

Gravity will take over and force the objects that have come together to stay together.  Other forces may be at work as well, the spinning and flattening of objects as they move under pressures.  

This is a pretty good story!  As we learn more about our Solar System the plot will thicken and we will begin to fill in the details.  Coming soon I hope!